Drag type scraper



Oct. 22, 1940. J. THOMAS 2,218,564

DRAG TYPE S CRAPER Filed July 26, 1958 5 Sheets-Sheet l Inventor I Aiiorneys Oct. 22, 1940. J, THOMAS DRAG TYPE SCRAZER Filed July 26, 19383 Sheets-Sheet 2 In ventor e/TZ, my??? @6' A itorneys Oct. 22, 1940. J,THOMAS DRAG TYPE SORAPER Filed July 26, 1938 3 Sheets-Sheet 3 In venior1 By Attorneys Patented Oct. 22, 1940 UNITED STATES PATENT v OFFICE DRAGTYPE scmrna John L. Thomas, vSomerto'n, Ariz. Application July 2c, 1928,Serial No; 221,416

level the ground by removing the earth from high places and depositingthe collected earth in low places as the device is drawn forwardly, theconstruction of the device being such that the leveling member whichcollects and deposits the earth it may be readily varied with respect tothe surface of the ground by hydraulic means so that the scraping actionof the member on the ground may be varied to meet with differentconditions.

Another object of this invention is the provision of a drag type scraperof the above stated character which will be durable, efficient andeasily manipulated and may be manufactured and sold at a low cost.

to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to.the following description and accompanying drawings, in which Figure 1is a top plan view illustrating a drag type scraper constructed inaccordance with my invention.

Figure 2 is a side elevation illustrating the same.

- Figure 3 is a vertical sectional view showing the scraper member andits mounting upon the frame and the means of adjusting said scrapermember.

Figure 4 is a front elevation illustrating the scraper member.

Figure 5 is a fragmentary vertical view showing a portion of the scrapermember and the cutting blade carried thereby.

Figure 6 is a sectional view taken on line 66 of Figure 3. v

Figure 7 is a detail sectional view taken on line 1-1 of Figure 3.

Referring in detail to the drawings, the numeral l indicates a mainframe of substantially triangular shape having its apex disposedforwardly. The apex of the frame is secured on a draft tongue II whichextends forwardly and rearwardly of said apex and has its rearendfastened on the rear transverse bar l2 of the frame. A suitableclevis I3 is secured to'the forward end of the draft tongue whereby thelatter may be conveniently coupled to a tractor or some other similardraft means. i

sectional Arched axle supporting members l4 have their forward endssecured on the converging members I of theframe and also on thetransverse member l2 of the frame. The axle supporting memilii bersbeing archedv permit free upward and down- 5 ward movement of agroundleveling member [6 and have secured to their rear. ends an axle I1 onwhich are journaled. ground wheels l8 having comparatively broadtreadsurfaces. The .groundleveling member [6 consists of a; rear wall 19arcuately curved and of a length sub: stantially equal to the width ofthe frame Ill. The wall [9 of the levelingmember l6 being arcuatelycurved provides a concaved face disposed next to the frame or presentedina forward direction of the device in entirety. Substantiallytriangular shaped plates 20 are secured to the concaved face of theplate or member l6 and are arranged right angularly thereto and extendforwardly thereof.

The plates 20 are spaced and are so arranged to form substantiallyindependent dirt receiving pockets in the leveling member [6. The plates20 have certain edges thereof disposed substantially straight to contactthe ground, as shown in Figure 3. The plates 20 are pivotally mounted onarms 2| secured to the transverse member l2 of the frame l0 andextending rearwardly thereof. The lower edge of the member or plate I9has mounted thereon a removable scraper blade 22. The opposite edges ofthe scraper blade are sharpened so that it may readily be reversed onthe leveling device whenever one edge becomes dull.

Upwardly and forwardly extending members 23 are secured on the levelingdevice or on the plate or member l9 thereof and are connected by atransverse bar 24, also are strengthened by braces 26, the lower ends ofwhich are secured on certain of the plates 20.

A hydraulically operated means 21 is mounted on the frame Ill and ispivotally connected to the member 24. The hydraulic means is for thepurpose of regulating the cutting action. of the blade in the ground andalso to provide means whereby the leveling device may be raised andlowered with respect to the ground for the purpose of dumping theleveling device or rendering it inoperative and to bring said levelingdevice as close to the ground as desired. The hydraulic means 21consists of a cylinder 28 pivotally mounted on a bracket 29 carried bythe frame I0 and operable in said cylinder (and not shown) is a piston,the stem thereof being indicated by the character 30 and is pivotallyconnected to the member 24. Fluid pipes 3| connect with opposite ends ofthe cylinder and to a source (not shown), also a control means (notshown), whereby fluid may be introduced into either end of the cylinderfor the purpose of moving the piston therein in opposite directions tobring about raising and lowering of the leveling member. The fluidsource may be carried by the tractor or other power means used fordrawing the device over the ground.

The device as shown in the drawings and described in detail in theforegoing specification is compact, durable and efiicient and may bepulled or drawn over the ground while operating on the latter with aminimum amount of horse power.

The arms 2| are arranged in pairs so that each pair receivestherebetw-een a plate 20, the latter being connected to said arms by apivot pin 32 carrying cotter keys or the like 33 in the ends thereof.The pins 32 can be easily removed when desiring to detach the levelingmember from the frame, also the leveling member may be convenientlydetached from the hydraulic operating means through the removalof apivot pin, as indicated at 34.

It is believed that the foregoing description, when taken in connectionwith the accompanying drawings will fully set forth the construction andadvantages of this invention to those skilled in the art to which such adevice relates, so that further detailed description will not berequired.

Having described the invention, what I claim is:

A drag type scraper comprising a triangular shaped frame, a draft tongueconnected to the apex of said frame, pairs of rigid rearwardly extendinghorizontally arranged arms on said frame, arched members having theirforward ends fixed to said frame to form therewith a rigid structure, anaxle carried by the rear ends of said arched members and spaced from theframe, ground wheels journaled on said axle, relatively spacedsubstantially triangular-shaped plates pivotally mounted between saidpairs of arms, an arcuately curved plate secured to said substantiallytriangular shaped plates and cooperating therewith in forming aplurality of dirt collecting pockets and located between the axle andthe frame and below said arched members, a scraper blade removablymounted on the lower edge of said arcuately curved. plate, upwardly andforwardly extending arms having curved portions secured on certain ofsaid substantially triangular shaped plates adjacent the.

arcuately curved plate, a member connecting said arms above said plates,braces connecting said arms and certain of said triangular shapedplates, and an operating means mounted on the frame and connected withthe last-named member.

JOHN L. THOMAS.

